Short Leases Explained: Why 80 Years Matters
A lease crossing below 80 years gets sharply more expensive to extend, harder to mortgage and harder to sell. Here is why, and what to do about it.
The Short Version
- A lease with under roughly 80 years unexpired is considered short
- Below 80 years, marriage value becomes payable and extension costs rise steeply
- Lenders commonly want the mortgage term plus 30–40 years remaining
- Statutory extension adds 90 years and reduces ground rent to a peppercorn
- Ask a seller who has owned for two years to serve notice and assign it to you
- Get the exact unexpired term in writing before you make an offer
What counts as a short lease
A residential lease with fewer than about 80 years remaining is generally described as short. There is nothing magical about the number itself, the lease does not change on the day it crosses that line, but 80 years is where the economics shift sharply, and it is the threshold lenders, valuers and solicitors all work to.
Leases are typically granted for 99, 125 or 999 years. A flat in a 1980s conversion granted a 99-year lease may now have under 60 years left. The unexpired term, not the original term, is what matters.
Why 80 years is the cliff edge
Under the Leasehold Reform, Housing and Urban Development Act 1993, qualifying leaseholders have a statutory right to extend their lease. Once the unexpired term falls below 80 years, an additional element called marriage value becomes payable to the freeholder.
Marriage value is, broadly, the increase in the property's value created by extending the lease, and the leaseholder must pay the freeholder half of it. Crossing below 80 years can therefore add many thousands of pounds to an extension premium, and the cost continues rising as the term shortens further.
This is why the practical advice is consistent: if you own a lease approaching 80 years, act before it drops below, not after.
The three problems a short lease creates
1. Mortgageability
Most lenders require a minimum unexpired term at the end of the mortgage. A common formula is the mortgage term plus 30 to 40 years, meaning a 25-year mortgage needs roughly 55 to 65 years remaining. As the lease shortens, the pool of willing lenders narrows, and below about 60 years many mainstream lenders decline entirely.
2. Value
A short lease is a depreciating asset. The shorter the term, the lower the value relative to an equivalent long-lease or freehold property.
3. Saleability
Since your buyer faces the same mortgage difficulty you would, a short lease shrinks your market. Cash buyers and investors remain, but they price accordingly.
Your right to extend
Qualifying leaseholders have a statutory right to a lease extension. The statutory route adds 90 years to the remaining term and reduces ground rent to a peppercorn: effectively nil.
You can also negotiate informally with the freeholder, which is sometimes quicker and cheaper. But an informal extension carries risks: the freeholder sets the terms, may add a shorter extension, may retain or increase ground rent, and may impose conditions the statutory route would not permit. Take advice before choosing the informal path.
Leaseholders can also act collectively to buy the freehold outright, collective enfranchisement, where enough qualifying leaseholders in a building participate. This is more complex but gives long-term control over service charges and management.
If you are buying a flat with a short lease
- Get the exact unexpired term before you offer. Ask the agent in writing. Do not wait for it to emerge at enquiry stage.
- Check your lender's minimum term. Before you commit, not after your offer is accepted.
- Get an extension estimate. A specialist valuer can indicate the likely premium. This is a negotiating point on price.
- Ask the seller to serve notice before completion. If the seller has owned the flat for two years they qualify to extend; the benefit of a served notice can be assigned to you, letting you extend immediately rather than waiting two years yourself.
- Instruct a firm with genuine enfranchisement experience. This is specialist work, and a general conveyancer will usually refer it out.
Reform is ongoing
Leasehold reform has been under active government consideration for several years, with proposals including abolishing marriage value and making extensions cheaper and simpler. Some measures have passed; others remain in progress.
The practical position is this: reform proposals are not law until they are in force, and timing is uncertain. Decisions about a lease you own or are buying now should be based on the law as it currently stands, taking specialist advice on whether waiting is worth the risk in your specific circumstances.
A Note on Jurisdiction
This guide applies to England and Wales. Residential long leasehold was largely abolished in Scotland by the Long Leases (Scotland) Act 2012. Scottish flat owners hold their property outright, with common repairs and shared parts governed by the title deeds and the Tenements (Scotland) Act 2004.
Common Questions
Frequently Asked Questions
What is considered a short lease?
A residential lease with fewer than around 80 years unexpired is generally considered short. Below that threshold marriage value becomes payable on a statutory lease extension, which increases the cost significantly. Mortgage availability also narrows as the term shortens, with many mainstream lenders declining below about 60 years.
What is marriage value?
Marriage value is the increase in a property's value created by extending the lease. Where the unexpired term is below 80 years, the leaseholder must pay the freeholder half of that increase as part of the extension premium. It is the main reason extension costs rise sharply once a lease drops below 80 years.
Can I extend a lease immediately after buying?
Not by the statutory route unless the previous owner assigns the benefit of a notice to you. Normally you must have owned the property for two years to qualify. However, if the seller has owned it for two years they can serve notice before completion and assign the benefit to you, allowing you to proceed immediately. This should be arranged as part of the purchase negotiation.
Does the leasehold system apply in Scotland?
Residential long leasehold was largely abolished in Scotland by the Long Leases (Scotland) Act 2012, which converted most remaining long residential leases to outright ownership. Scottish flats are typically held outright with shared responsibility for common parts governed by title deeds and the Tenements (Scotland) Act 2004, rather than by a lease from a freeholder.
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